Electromagnet device and electromagnetic contactor

A core for an electromagnetic device, comprising:

• a yoke and at least two legs extending from the yoke, said yoke and at least two legs being formed of steel plates laminated together, each of the legs having a free end face forming a magnetic pole face, a first groove extending from the magnetic pole face and a second magnetic groove on a side face thereof;
• and
• a shading coil having a metal ring shape, and including a first linear section and a second linear section extending in parallel with each other, at least a part of the first linear section being accommodated in the first groove and at least a part of the second linear section being accommodated in the second groove so that a bottom face of the second groove forms an angle with respect to a bottom face of the first groove, the second linear section being locked in the second groove.